• Title/Summary/Keyword: 부패병

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Identification of Pathogens Causing Grape Rot on 'Red Glove' Variety Imported from Chile (칠레산 수입포도 '레드글로브' 품종에 발생한 부패병 병원균의 동정)

  • Song, Min-Ji;Lee, Hyok-In;Yea, Mi-Chi;Kim, Dae-Ho;Hong, Seung-Beom;Cha, Jae-Soon
    • Research in Plant Disease
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    • v.18 no.3
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    • pp.217-224
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    • 2012
  • Post-harvest rot of grape causes a severe economic loss and lower of the grape quality. It is also one of the important limiting factors for grape export. Grape rots and their casual agents on 'Red Globe' variety imported from Chile were identified. Grapes shown rotting symptom were collected from the storages near the import harbor. The 3 different rots were identified on the imported 'Red Globe'; melting decay, gray mold, and blue mold. A bacterium that isolated from a typical melting decay symptom was identified as Gluconobacter cerinus on basis of its nucleotide sequence of 16S rDNA and fatty acid profile. By inoculation on grape, it caused cracking and dissolution of epidermis of grape which were the characteristics of melting decay. Botrytis cinerea and Penicillium expansum were isolated from grapes showing gray mold and blue mold. The 2 fungal isolates were identified on basis of their morphological characteristics and nucleotide sequence of their beta-tubulin genes. They showed strong pathogenicity on 'Campbell Early' variety that is a major table grape in Korea.

Identification of Bacteria Causing Rot Diseases of Vegetables in Fields and Post-harvest Period in Korea -3. Bacterial Rot Diseases of Radish (포장(圍場)과 수확후(收穫後)에 채소부패병(菜置腐敗病)을 일으키는 병원세균(病原細菌)의 동정(同定) -3. 무우의 세균성(細菌性) 부패병(腐敗病))

  • Choi, Jae Eul;Han, Kwang Seop;Park, Jong Seong
    • Korean Journal of Agricultural Science
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    • v.15 no.2
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    • pp.138-142
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    • 1988
  • Fifty-eight root rot samples were collected from 30 main markets and radish-growing areas in Korea from which 34 isolates of pathogenic bacteria were obtained to identified causal bacteria of the disease. According to their bacteriological characteristics and pathogenicity, the majority of rot bacteria were identified as Erwinia carotovora subsp. carotovora and Pseudomonas marginalis pv. marginalis. Among these species, E. carotovora subsp. carotovora was found to cause serious damage to radish production throughout Korea. P. marginalis pv. marginalis is the first description of bacteria which cause the diseases in radish in Korea.

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Identification of Bacteria Causing Rot Diseases of Vegetables in Fields and Post-harvest Period in Korea -2. Bacterial Rot Diseases of Cabbage (위장(圍場)과 수확후(收穫後)에 채소부패병(菜蔬腐敗病)를 일으키는 병원세균(病原細菌)의 동정(同定) -2. 양배추의 세균성(細菌性) 부패병(腐敗病))

  • Choi, Jae Eul;Han, Kwang Seop;Park, Jong Seong
    • Korean Journal of Agricultural Science
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    • v.15 no.2
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    • pp.132-137
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    • 1988
  • Twenty-six cabbage rot samples were collected from markets and main cabbage-growing areas in Korea and isolates of pathogenic bacteria were obtained from the collection. According to their bacteriological characteristics and pathogenicity, the majority of rot bacteria were identified as Erwinia carotovora subsp. carotovora. Pseudomollas cichorii. P. viridiflava and Xanthomonas campestris pv. campestri. Among these four species, E. carotovora subsp. carotovora and X. campestris pv. campestris were found to cause serious damage to cabbage production throughout Korea. Two species of the causal bacteria were sometimes isolates from a single cabbage rot sample and it suggest that the mixed infection of the two bacteria be occurred under field condition.

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Inhibition of Penicillium Bulb Rot by Fungicides and Culture Broth of Antagonistic Bacteria during Storage of Lilium Oriental Hybrids (살균제 및 길항세균 배양액 처리에 의한 백합 저장구근의 부패 발생억제)

  • Kim, Byung Sup;Lee, In Kwon;Hong, See Jin;Kim, Hak Ki;Park, Se Won
    • Horticultural Science & Technology
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    • v.19 no.4
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    • pp.591-595
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    • 2001
  • This study was conducted to find out the proper chemicals and doses for controlling the bulb disease of Lilium Oriental hybrids 'Capablanca' and 'Marco Polo' cultivars during storage, and to ascertain any disadvantage of the treatment on shoot growth and flower development. Bulbs of 'Casablanca' and 'Marco Polo' cultivars were dipped in some fungicide solutions, including azoxystrobin, benomyl+thiram, and prochloraz, and culture broth of antagonistic bacteria for one hour. The rot was apparently inhibited by azoxystrobin and prochloraz solution dippings and it was not by benomyl+thiram in bulbs produced domestically. To improve physiological integrity, calcium chloride was treated. However, this treatment had no positive effects on bulb rot of lily. When bulbs were dipped in one-fifth of diluted broth. But the bulb rot was inhibited effectively as compared with untreated during storage. Benomyl+thiram and that with calcium inhibited the sprouting in 'Casablanca' and 'Marco Polo' cultivars during cultivation. Calcium and benomyl+thiram treatments decreased growth of leaf and flower but with no statistically significant difference. Other fungicidal materials treated to bulbs showed no effect on vegetative growth and flower quality.

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Effects of Chemicals on Growth of Pythium zingiberum Causing Rhizome Rot of Ginger and Inhibition of the Disease Development (약제에 의한 Pythium zingiberum의 생장 및 생강 근경부패병 발병 억제효과)

  • 최인영;이왕휴;소인영
    • Korean Journal Plant Pathology
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    • v.12 no.3
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    • pp.331-335
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    • 1996
  • 1993년 전북완주와 충남 서산 지역에서 생강 근경 부패병에 감염된 식물체로부터 Pythium sp.를 분리하였으며, 52균주를 형태적 특징과 병원성 검정을 통해 Pythium zingiberum으로 동정하였다. P. zingiberum으로 동정된 균주들이 재배지에서 사용되는 metalaxyl(MT), metalaxyl+copper oxychloride(MC), echlomezol(EM) 및 propamocarb hydrochloride(PC)등에 균사 생장, 난포자 형성에 미치는 영향 및 약제방제 효과 등을 검토하였다. MT, MC, EM 등이 혼합된 평판배지에서의 균사생육 정도는 50, 100 mg/L에서도 균사생장 억제를 나타냈으나 3균주는 EM 100mg/L에서도 균사생장이 저지되지 않았다. 100mg/L에서도 균사생육 억제효과가 적은 PC의 경우 저항성균주의 난포자 형성량은 약제 희석농도가 높아질수록 저하되었으나, 감수성을 나타낸 균주는 10, 50mg/L에서 오히려 증가하였다. 또한 폿트실험을 통한 약효검정 결과에서도 MT, MC, EM등은 대조구에 비해 생강 근경부패병을 억제하였다.

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'올해과수병해충 발생동향 진단'

  • 김정호
    • The Bimonthly Magazine for Agrochemicals and Plant Protection
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    • v.4 no.11
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    • pp.21-29
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    • 1983
  • 금년의 과수농사는 개화기에 다소 많은 비가 내렸고 강풍이 불어 다소 어려울 듯 하였으나 그후 생육기에는 안정되어 예년에 비하여 10$\%$정도 증수될 것으로 추정되고 있다. 이와같은 결과는 기상의 안정에 힘입은 바 크지만 농민들의 피와 땀의 결정이고 병충해 방제 및 모든 어려운 일을 슬기롭게 이겨낸 덕분이라 믿는다. 특히 금년 여름은 무던히도 더웠던 탓으로 후기에 굴나방, 점박이응애, 진딧물등 해충의 발생이 지역에 따라 심하였으며 과실의 숙기가 빨라진 탓으로 탄저병과 부패병(겹무늬병)이 약 20일 정도 일찍 발생되어 약제 방제를 소홀히 한 지역에서는 크게 문제가 되었다. 따라서 금년도의 기상과 병충해 발생 정도를 분석 진단하여 내년도 농사에 보탬이 되었으면 하고 과수별 주요 병해충을 진단해 보고자 한다.

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Chemical Control of Rhizome Rot of Ginger by Seed-Rhizome and Soil Treetment (생강 근경부패병의 약제방제)

  • Choi, Jae Eul
    • Korean Journal of Agricultural Science
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    • v.26 no.1
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    • pp.1-5
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    • 1999
  • This experiment was carried out to define the development of control method against rhizome rot of ginger. It was difficult to control of rhizome rot of ginger completely by way of only rhizome sterlization. When soil were stenilized with dazomet, and metalacxyl granule was applied, higher than 95% of control value as well as 39% of yield increase compared to control were found. Soil drenching with metalacxyl cupper oxychloride and streptomycin controlled the rhizome rot satisfactorily, but was inferior to the above mentioned combination.

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